Motor-control device.



w. S. MENDEN.

MOTOR CONTROL DEVICE.

APPLICATION map APR. 30. 1913 1,138,497. Patented May 4, 1915.

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W. S. MENDEN. MOTOR CONTROL D'EVICE.

APPLICATION man muse. 1913.

1,138,497. Patented May 4, 1915.

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M W @51 mto'tmu /W W. S. MENDEN.

MOTOR CONTROL DEVICE.

APPLICATION FILED Amao. 1913.

1,138,497. v Patented May 4, 1915.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

WILLIAM S. MENDEN,

or BROOKLYN, NEW Yonx, assrenoaro MEGOSIN COMPANY, INC., A CORPORATION or NEW YOBK.

Moron-coarser. DEVICE.

Specification of Letters Patent.

Patented May 4,1915.

I orig in'al application filed January 2, 1913; Serial No. 739,755. Divided and this application filed April 30,

1913. Serial No. 764,588

To all whom it may concern:

Beitknown that 1, WILLIAM .t citizen of the United States, residing in the borough of Brooklyn, county of Kings, and State of NewfYork, have invented certain new and useful Improvements in M0- tor-Control Devices, of which the following is a full and clear specification.

This inventionrelates to motor-control de- I vices for rapid transit cars, especially that type of'cars with which the subject matter of my ,co-pe'nding application Serial No.

739,755., filed January 2, 1913, is concerned and of which application, the present inven- In order to provide a shunt between the wires 9 and 16, for the purpose to be herein tion forms'a divisional portion thereof.

The primary object of the present invention is to provide an improved controlling mechanismwhereby in cases-of emergency, the motor can be ,short-icircuit'ed and the brakes applied automatically by an indi vidual positioned .at a distance from the motorman, said individual preferably being the conductor who may belocatedon a centrallydisposed platform such as shown and described in the abovementioned appl cation Serial No.'739,755. A device of this characterpsuch as shown and described in the drawings and specification, is peculiarly serviceable in connection with cars used for rapid transit in congested districts.

-Other and further objects will be apparent in the specification and be'pointed out in the appended claims, reference being had to the accompanying drawings exemplifying theinvention and in which,--

Figure 1 is a general wiring diagram of the car showing the controlling connections for the motor, Fig. 2 is a similar wiring diagram onan enlarged scal'e, embodying portions of the circuits 'shown in Fig. 1 and illustrating an emergency control of the brakes together with the motor control. Fig.

8 3 is a plan view of the floor of the car showing center entranceplatform and arrangement of, pedestal thereon for mounting the control instrumentalities.

- Referringmore particularly to the drawings and to the embodiment of my inven- I tion shown therein, the positive line 1 of the electric circuit is connected by a branch 2 with the pivot '3 of a switch lever 4, the

outer end 5 of said lever being adapted to contact with a contact plate 6 at the end of alead wire 7 which is connected up with one S. MENDEN,

end of a resistance coil 8, the other end of said COll being connected by a wire 9 with v the positive brush 10 which runs on the ar mature 11 of the motor. The negative brush 12 of said motor is connected to the field winding 13 of the motor, said field windingafter explained, a pair of shunt wires 19 and 23 with terminal contacts 20 and 22 are provided in such a way as to form agap-which may be closed by an armature 21 under certain conditions met with in the operation of my device; The armature 21 is provided with a stem 24 which connects it to the plumger 25 of a solenoid to be hereinafter referred to. A plurality of switch levers 4 (only one of which is shown) which are pivoted at 3, are suitably arranged and each provided with a stem 26 .which'is connected to a plunger 27 of a solenoid '28, said solenoid bein grounded at 29in the negative line 15. aid solenoid 28 is one of a series (only one being shown'so as to avoid confusion) which are adapted to successively operate the switches for throwing stepped resistances 8 (of which only one is shown) into circuit with, the armature of the motor. Suitable contact (not shown) within the controller box 30, are connected to each of the solenoids 28 by means of a line wire 31.

line 34 which leads fromvthe line 31 to the solenoid 35 which surrounds the plunger 25, is connected at. its otherend to the line 14 leading from the field oflthe motor to" the ground line 15. armature 21 is held in raised position when Normally, therefore, the

thereis a current traversing any coil of the resistance controller box 30. Rcciprocable n operative at such times as the door of the car may be opened for the ingress and egress of passengers, a branch wire 46 isconnected at one end 47 ,to the wire 31 and has its other end terminating in a contact 48. A contact 49 which is'spaced from the contact 48 is connected by a wire 50'which is con nected at 51 to the wire leading from the solenoid 28 and grounded at 29 in the ground wire 15. An armature 52 having a stem 53 is under a normal tendency to be moved into position bridging the contacts 48 and 49. For this purpose, a spring 54 is mounted within a housing 55in a suitable manner to effect a pressure upon the stem 53 and armature 52. The door 56 or, to be more exact, a stile- 57 of said door, is adapted to abut against the armature 52 when said door is in closed position, thereby serving to break the circuit which short-circuits the controller box 30 in the manner to be hereinafter ed out. In order that the motorman notified. when the door is open, any suitable signal 58 (preferably a visible one), is connected-by a wire 59 with a contact 60, said contact being spaced from another contact 61 which is connected by awire 62 with the ositive line 1. The signal 58 is connected y a wire 63 to the ground line 15. Mounted in the stile 57 of the door, is a short conductor 64. which is adapted when the door is in closed position to bridge the gap between the contacts 60 and 61, so that when the signal. 58 is energized, the motorman knows that the door is closed. Means permitting the conductor to signal the motorman are provided by a signal 65 which is connected by a wire 66 to a push button 67, said push button being also connected by a wire 68 to the positive line wire 1. The signal 65 is connected by wire 69 to the ground line 15. The door 56 may be moved by any suitable mechanism such .as that shown and pointmay be described in my co-pending application Serial No..764,589,-or said door may be opened and closed by hand. Referring now to Fig. 2 of the drawings, it is desirable to have some emergency control device whereby the conductor can secure absolute control of the car. For this purpose I preferably'cmploy an emergency braking apparatus adapted to J be operated by the conductor and in conjunced by a pipe 73 with the pressure cylinder 74, which in a well-known manner is adapted to impart the braking movements to the levers 75. The valve 72 is controlled by a crank arm 76 which is pivotally connected at 77 to the lower end of a connecting rod '78 which is connected at its upper end to a crank (not shown) which depends from a shaft 79, said shaft being in turn provided with a handle 80 which can be grasped by theconductor. Connected with the lever .arm 76 is a suitable bar conductor 81 which is insulated from the lever arm '76 by any suitable insulation 82. The bar 81 is adapted to bridge the gap between a pair of spaced contacts 83, one of said contacts forming the terminal of a wire 84 which leads from the wire 31, and'the other of said contacts forming the terminal of a wire 85 which connects at 86 to the Wire leadingfroln the solenoid 28 and which is grounded in the negative line wire 15.

The several controlling instrumentalities are mounted on a pedestal 100 which is centrally disposed on a center entrance platform 101 as shown in Fig. 3. Platform 101 is preferably constructed and arranged according to the description contained in my hereinbefore mentioned application, Ser. No. 739,755 and is disposed midway of the ends of the car, said ends being provided with platforms 102 upon which the controllers 30 are mounted. An inspection of Fig. 2 will show the eneral arrangement on the pedestal 100 of the push buttons 180, 181 and 67 which have been referred to in connection with the circuits traced'on liig. 1. Referring again to Fig. 1, the door 56 has connected thereto, a pistonrod 160 which carries a piston 161 reciprocable in the cylinder 162. A compressed air pipe 163 is adapted to convey air to said cylinder 162, a valve arm 171 being operated by a plunger 172 which is subject to the alternate energization of coils 173 and 174, the circuits through which are controlled by push buttons 180 and 181 respectively. The passage of air through a valve chamber lfit is thus controlled, the said valve chamber being connected by a pipe 166 to a reservoir 165. Leading from the valve chamber 164 isa second pipe 170 which connects with the cylinder 169. Rigidly connected to the piston rod 160 isa second piston rod 167 which carries a piston 168 which reciprocates in the cylinder 169.

The operation of my improved device will now be readily understood and briefly described is as follows: Whenv themotorman 1 operates the controller to start the car, a 'circuitis .closed from line wire 1 through wire- 32, resistance 33, contacts in controller 5 box 30, line .31, solenoid 28 and ground line 15, thisenergizes the solenoid and raises the plunger 27 together with switch lever 1 and moves-said switch levartothecontact 6. This closes a circuit from line 'lthrough WirefifstvitehA, wire'i, resistance 8, wire wire 14,tho"result being that thcpluriger 1.8

together with the armature 37 is raised to breakacircuit including wire 42, contacts 38 and 39, armature wire 40, push button 18 0.or 1:81, wire 44 or 44*, and wire 44, this 2 0 circuitbeing suitable to control the energization of .coil 173 or coil 174 and the oscillatory movements of the valve arm 171 for operating the valve in housing-164. Said valve isthus adapted to admit pressure fluid to cylinders 162 and 169 for closing and opening the door 56. In order to maintain the energization of the solenoid 17 when the current is shut off from the motor and so as to maintain the door operating mecha- .nism inoperative when the current is cut off from the armature 11 and while the car is ,yet in motion, 'as pointed out in said application, a lesser circuit including line 9, armature llr, solenoid 17, branches 19 and 23 with armature 21 for closing the gap 'thcrebetween, is provided. Suitable means for maintaining this lesser circuit inoperative while power is being applied to the motor, is provided in the following circuit, namely, wire 34, solenoid 35 and that portion of wire 14 which is grounded in the line 15, this branch circuit serving to maintain the armature 2-1 in elevated position. \Vhen the car comes to rest and the door 56 is opened, the armature 52 comes into contact with corn tacts48 and 49 and closes a circuit including wire 32, contacts in controller box 30, wire 31, wire 46 which branches at 47 from the wire 31, armature 52, wire 50 which joins 50 the ground Wire from the solenoid 28 at 51 thus serving to short-circuit the solenoid 28 and rendering it impossible toenergize the motor.

What I claim is:

l. Ina passenger car, a motor, a circuit therefor, a shunt for short circuiting said motor, and a make and break device for said shunt.-

2. In a passenger car, a motor, a circuit therefor, a short-circuiting shunt for said motor, a make and break device forsaid shunt circuit, and a door adapted to operate said make and break device- 3. In apassenger car, an electric motor; a

circuit for operating said motor, said circuit including a switch, means for operating said switch, a shunt circuit for controlling said operating means, a'short circuiting branch for said shunt, a switch for said branch, and a door for said car operatively' connected to the switch for said branch, said branch switch being normally held in open position by the door in closed positionand adapted to automatically close said branch when the door is opened.

4-. In a passenger car, an electric motor, an operating circuit therefor, a switch included in said circuit, a shuntcircuitincluding means for operating said. switch, a door for said car, and meansbpefatively related 30 to said door for short circuiting said shunt circuit.

5. In a passenger car, a motor, a circuit including said motor, a door for said car,

and means operated by said door-for short circuiting said motor.

6. In a passenger car, a door, door operating means, a motor, means operated by the door for rendering the motor'l'noperative at one time, and means controlled by the motor for rendering the door operating means inoperative at another time.

7. In a passenger car, an electric motor, a switch for controlling the operation of said motor, means for operating said switch, a circuit for controlling said operating means, a short circuiting shunt for said circuit, a switch for said shunt, and a door for said car operatively connected to the switch for said shunt.'

8. In a passenger car, a m0tor, a controller therefor, a door, automatic means under the control of said motor for opening and closing said door, and a signal adjacent said controller operatively controlled by said door. I

9, In a passenger car, the combination with a motor, of'an automatic door, a circuit controlling said door, said circuit being provided with a make and break device, a motor circuit including said device and hormally holding it in circuit breaking position, a short circuiting shunt .for said motorcircuit, said shunt having a gap and an armature adapted to close said gap, and means 115 depending upon the encrgization of the mo-' tor circuit for retaining said armature in open position, said armature bing adapted to close the shunt automatically when the motor is deiincrgized.

10. In a passenger car, a motor, an operating circuit therefor, an automatic door, an operating circuit for said door, means for breaking the door-operating circuit, said means being energized by the motor circuit, a shunt for short circuiting the motor when it operates as a generator, and means normally maintaining a break in said shunt during the energiz ation of the motor circuit.

.11. In a passenger car provided with end:,

platforms for the motorman and an intci mediate platform for the entrance and exit of passengers, a revoluble turret on said intermediate platform circuits terminating in said turret for controlling the opening and closing of said doors, signals on'said end platforms and circuits also terminating in said turret for operating said signals.

'12.- In a passenger car provided with end platforms for the motorman and an intermedia'te platform for the entrance and exit of passengers, a motor, motor controllers on said end platforms, circuits including said motors and controllers, doors for said intermediate platform, circuits for controlling the opening and closing of said doors, and means mounted on said intermediate plat form cooperatively controlling said circuits.

13. In a passenger car provided with an intermediate platform for the entrance and exit of passengers, a motor, a motor controller. a circuit including said motor and controller and means on said intermediate platform for controlling said circuit independently of said controller, said means including a door for said intermediate platform and a circuit making and breaking device operated by said door.

'14, In a passenger car provided with an intermediate platform for the entrance and exit of passengers, a motor, a motor controller, a circuit including said motor and controller, doors for said intermediate platform, circuits for controlling the opening and closing of said doors, and means mounted on said intermediate platform cooperatively controlling said circuits.

WILLIAM s. MENDEN.

lVitnesses:

WM. A. COURTLAND, V. J. CHARTRAND. 

